CN104806392A - Pump casing cover of automobile electric fuel pump - Google Patents
Pump casing cover of automobile electric fuel pump Download PDFInfo
- Publication number
- CN104806392A CN104806392A CN201510180929.1A CN201510180929A CN104806392A CN 104806392 A CN104806392 A CN 104806392A CN 201510180929 A CN201510180929 A CN 201510180929A CN 104806392 A CN104806392 A CN 104806392A
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- Prior art keywords
- way valve
- case lid
- retaining ring
- pump
- pump case
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Abstract
The invention discloses a pump casing cover of an automobile electric fuel pump. The pump casing cover comprises a pump casing cover body, wherein a one-way valve body is arranged on a top plate of the pump casing cover body; a stepped hole communicated with the pump casing cover body is formed in the center of the one-way valve body along the axial direction; a one-way valve assembly is arranged in a large-aperture section of the stepped hole and comprises a one-way valve, a one-way valve spring seat and a spring; the one-way valve spring seat comprises a fixed ring; a plurality of support pillars are distributed on the end face of the fixed ring; guide posts are connected with the fixed ring through the support pillars; the guide posts extend out of a space defined by the support pillars; a square shaft hole is formed in each guide post along the axial direction; the one-way valve comprises a semispherical valve core, a valve core seat and a connecting shaft; the connecting shaft is a square shaft and extends into the shaft hole; an annular step is arranged outside the semispherical valve core along the circumferential direction; one end of the spring supports against the end faces of the support pillars; the other end of the spring supports against the annular step. The pump casing cover is simple in structure; the phenomenon that the one-way valve rotates is prevented, so that abnormal noises caused by the rotation of the one-way valve are avoided.
Description
Technical field
The present invention relates to a kind of automobile electric fuel pump pump case lid.
Background technique
Electric fuel punp is for the vitals in the electric control fuel oil jet system in passenger car petrol engine, passenger car oil machine, diesel engine of commercial vehicle etc., the effect of fuel pump is mainly transported to after fuel oil sucking-off from fuel tank, pressurization in fuel supply line, and certain fuel pressure is set up in fuel pressure regulator cooperation.General fuel pump comprises motor casing, pump case lid, the in-built armature of motor casing, one end of motor casing is oil-feed end cap and fuel-displaced end cap, it is pump chamber between oil-feed end cap and fuel-displaced end cap, the in-built worm gear of pump chamber, the other end of motor casing is pump case lid, cover in pump case and be provided with check valve assembly, check valve assembly comprises one-way valve, check valve spring seat and spring, one-way valve comprises spheroidal spool, valve core case and coupling shaft, spring seat is provided with directional post, the coupling shaft of current one-way valve is cylindrical, the axis hole of the directional post of corresponding spring seat is also cylindrical, like this, fluid is when passing through, one-way valve spheroidal Spool rotating, coupling shaft also and then rotates in directional post, cause rotating different sound, riding comfort reduces, simultaneously, due to spin friction, by the appearance of phenomenons such as causing follow-up one-way valve poorly sealed.
Summary of the invention
For existing problem, the object of the present invention is to provide a kind of automobile electric fuel pump pump case lid eliminated rotation, avoid different sound.
To achieve these goals, technological scheme of the present invention is: a kind of automobile electric fuel pump pump case lid, comprise pump case lid body, the top board of described pump case lid body is provided with check valve body, the center of described check valve body is provided with the shoulder hole communicated with pump case lid body vertically, the small aperture section of described shoulder hole is near pump case lid body, the large aperture section of described shoulder hole is built with check valve assembly, described check valve assembly comprises one-way valve, check valve spring seat and spring, it is characterized in that: described check valve spring seat comprises retaining ring, one of them end face of described retaining ring is evenly distributed with multiple supporting post, gap is had between described supporting post, directional post is connected with retaining ring by described supporting post, described directional post is between all supporting posts, and there is distance between one end of described directional post and retaining ring, the other end of described directional post extends to outside the space that supporting post surrounds, described directional post is provided with axis hole vertically, described axis hole is square opening,
Described one-way valve comprises hemisphere spool, valve core case and coupling shaft, described valve core case is cylindrical, the diameter of described valve core case is less than the diameter of hemisphere spool, one end of described valve core case is fixedly connected with hemisphere spool, the other end is fixedly connected with coupling shaft, and described coupling shaft is square shaft, and described coupling shaft stretches in axis hole, described hemisphere spool outer circumference is provided with ring-shaped step, and described ring-shaped step is positioned at the position near valve core case;
Described spring housing is outside directional post and one-way valve, and one end of described spring is against on the end face of supporting post, and the other end is against on ring-shaped step; The large aperture section inwall of described shoulder hole is provided with the annular groove mated with retaining ring near the position of outlet end, described retaining ring is arranged in this annular groove, and described hemisphere spool reaches in the small aperture section of shoulder hole.
Adopt such scheme, inner elements of check valve coupling shaft is designed to corresponding with the axis hole of directional post square, and hemisphere spool and the mode taking between valve core case and coupling shaft to be fixedly connected with, like this, fluid, when passing through, would not rotate at square spacing lower unidirectional valve circle spherical valve core, abnormal sound can not be produced, meanwhile, the friction that one-way valve spheroidal Spool rotating causes can also be avoided, thus the appearance of the problems such as the poorly sealed reality caused.Directional post is connected with retaining ring by supporting post, and like this when one-way valve opens, fluid passes through from the gap between supporting post, then is gone out in fuel pipe by retaining ring center hole.Spring fitting of the present invention is convenient in addition, and structure is simple, installs easily.
In such scheme: the center line of described valve core case, hemisphere spool and coupling shaft on the same line.Be convenient to processing and assembling like this.
In such scheme, described coupling shaft, hemisphere spool, valve core case and ring-shaped step are one-body molded.Be convenient to produce.
In such scheme: described supporting post is three.Three supporting posts form a circle, and directional post is arranged on wherein, save material, reasonable in design.
In such scheme: the aperture of the center hole of described retaining ring is greater than the aperture of axis hole.Be conducive to fuel-displaced like this.
In such scheme: described retaining ring, supporting post and directional post are one-body molded.Production and processing is easier.
In such scheme: described pump case lid body is also provided with safety valve.Like this when overpressure in pump case lid, safety valve pressure release can be passed through.
The invention has the beneficial effects as follows: structure of the present invention is simple, reasonable in design, by columniform axis hole is revised as square opening and prism, coupling shaft is designed to square shaft simultaneously, realize square spacing like this, avoid inner elements of check valve to rotate, thus avoid the different sound that brings because of rotation and friction.Spring seat is reasonable in design, does not need to arrange separately spring step surface, and structure is simple, safe and reliable.
Accompanying drawing illustrates:
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention.
Fig. 2 is A place partial enlarged drawing in Fig. 1
Fig. 3 is the structural representation of one-way valve.
Fig. 4 is the structural representation of check valve spring seat.
Fig. 5 is the left side view of Fig. 4.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described:
Embodiment 1
As illustrated in fig. 1 and 2: automobile electric fuel pump pump case lid of the present invention, comprises pump case lid body 10, and the top board of pump case lid body 10 is provided with check valve body 11, and pump case lid body 10 is also provided with safety valve 12.The center of check valve body 11 is provided with the shoulder hole 11a communicated with pump case lid body 10 vertically, the small aperture section of shoulder hole 11a is near pump case lid body 10, the large aperture section of shoulder hole 11a is built with check valve assembly, and check valve assembly comprises one-way valve, check valve spring seat and spring 9.
As shown in Figure 3, one-way valve is made up of parts such as hemisphere spool 1, valve core case 2, coupling shaft 3, ring-shaped steps 4.
Valve core case 2 is cylindrical, and the diameter of valve core case 2 is less than the diameter of hemisphere spool 1, and coupling shaft 3 is square shaft, and its diameter of axle is less than the diameter of valve core case 2.One end of valve core case 2 is fixedly connected with hemisphere spool 1, and the other end is fixedly connected with coupling shaft 3, and the center line of valve core case 2, hemisphere spool 1 and coupling shaft 3 on the same line.Hemisphere spool 1 is outer is circumferentially provided with ring-shaped step 4, and ring-shaped step 4 is positioned at the position near valve core case 2.Coupling shaft 3, hemisphere spool 1, valve core case 2 and ring-shaped step 4 are one-body molded.So convenient processing.
As illustrated in figures 4-5, check valve spring seat comprises spring seat body, and spring seat body is made up of parts such as retaining ring 5, supporting post 6, directional post 7 and axis holes 8.
Retaining ring 5 away from the end face of oil outlet being evenly distributed with multiple supporting post 6, be preferably 3 supporting posts 6, reasonable in design like this, cost is low.Have gap between supporting post 6, fuel oil passes through from the gap between supporting post 6, then flows out from the center hole of retaining ring 5.Directional post 7 is connected with retaining ring 5 by supporting post 6, directional post 7 is arranged in the space that all supporting posts 6 surround, and there is distance between one end of directional post 7 and retaining ring 5, time concrete, this end of directional post 7 is positioned at the middle part of supporting post 6, the other end of directional post 7 extends to outside the space that supporting post 6 surrounds, specifically, the end of supporting post 6 is positioned at the middle part of the outer surface of directional post 7, like this, the end face of supporting post 6 just can directly as the attachment face of spring, and that is, spring is directly against on this end face.Directional post 7 is provided with axis hole 8 vertically, and axis hole 8 is square opening.Coupling shaft 3 stretches in this square opening and prism 8, thus realizes square spacing to one-way valve, avoid fuel oil by time one-way valve rotation, avoid consequent abnormal sound.The aperture of the center hole of retaining ring 5 is greater than the aperture of axis hole 8.Facilitate fuel-displaced like this.Retaining ring 5, supporting post 6 and directional post 7 are one-body molded.Such design processing is easier.
Spring 9 is enclosed within outside directional post 7 and one-way valve, and one end of spring 9 is against on the end face of supporting post 6, and the other end is against on ring-shaped step 4.The large aperture section inwall of shoulder hole 11a is provided with the annular groove mated with retaining ring 5 near the position of outlet end, retaining ring 5 is arranged in this annular groove, and hemisphere spool 1 reaches in the small aperture section of shoulder hole 11a.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technician in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment.
Claims (7)
1. an automobile electric fuel pump pump case lid, comprise pump case lid body (10), the top board of described pump case lid body (10) is provided with check valve body (11), the center of described check valve body (11) is provided with the shoulder hole (11a) communicated with pump case lid body (10) vertically, the small aperture section of described shoulder hole (11a) is near pump case lid body (10), the large aperture section of described shoulder hole (11a) is built with check valve assembly, described check valve assembly comprises one-way valve, check valve spring seat and spring (9), it is characterized in that: described check valve spring seat comprises retaining ring (5), one of them end face of described retaining ring (5) is evenly distributed with multiple supporting post (6), described supporting post has gap between (6), directional post (7) is connected with retaining ring (5) by described supporting post (6), described directional post (7) is positioned between all supporting posts (2), and there is distance between one end of described directional post (7) and retaining ring (5), the other end of described directional post (7) extends to outside the space that supporting post (6) surrounds, described directional post (7) is provided with vertically axis hole (8), described axis hole (8) is square opening,
Described one-way valve comprises hemisphere spool (1), valve core case (2) and coupling shaft (3), described valve core case (2) is for cylindrical, the diameter of described valve core case (2) is less than the diameter of hemisphere spool (1), one end of described valve core case (2) is fixedly connected with hemisphere spool (1), the other end is fixedly connected with coupling shaft (3), described coupling shaft (3) is square shaft, described coupling shaft (3) stretches in axis hole (8), described hemisphere spool (1) is circumferentially provided with ring-shaped step (4) outward, described ring-shaped step (4) is positioned at the position near valve core case (2),
Described spring (9) is enclosed within outside directional post (7) and one-way valve, and one end of described spring (9) is against on the end face of supporting post (6), and the other end is against on ring-shaped step (4); The large aperture section inwall of described shoulder hole (11a) is provided with the annular groove mated with retaining ring (5) near the position of outlet end, described retaining ring (5) is arranged in this annular groove, and described hemisphere spool (1) reaches in the small aperture section of shoulder hole (11a).
2. automobile electric fuel pump pump case lid according to claim 1, is characterized in that: the center line of described valve core case (2), hemisphere spool (1) and coupling shaft (3) on the same line.
3. automobile electric fuel pump pump case lid according to claim 1, is characterized in that: described coupling shaft (3), hemisphere spool (1), valve core case (2) and ring-shaped step (4) are one-body molded.
4. automobile electric fuel pump pump case lid according to any one of claim 1-3, is characterized in that: described supporting post (6) is three.
5. automobile electric fuel pump pump case lid according to claim 4, is characterized in that: the aperture of the center hole of described retaining ring (5) is greater than the aperture of axis hole (8).
6. automobile electric fuel pump pump case lid according to claim 5, is characterized in that: described retaining ring (5), supporting post (6) and directional post (7) are one-body molded.
7. automobile electric fuel pump pump case lid according to claim 1, is characterized in that: described pump case lid body (10) is also provided with safety valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510180929.1A CN104806392A (en) | 2015-04-16 | 2015-04-16 | Pump casing cover of automobile electric fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510180929.1A CN104806392A (en) | 2015-04-16 | 2015-04-16 | Pump casing cover of automobile electric fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104806392A true CN104806392A (en) | 2015-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510180929.1A Pending CN104806392A (en) | 2015-04-16 | 2015-04-16 | Pump casing cover of automobile electric fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806392A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837629A (en) * | 2017-03-20 | 2017-06-13 | 瑞安市科达汽车配件有限公司 | External multifunctional cold start-up electric fuel punp |
| CN114876686A (en) * | 2022-04-25 | 2022-08-09 | 一汽奔腾轿车有限公司 | Fuel pump fine filter structure integrated with one-way valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6971405B2 (en) * | 2002-10-09 | 2005-12-06 | Delphi Technologies, Inc. | Check valve for fuel pump |
| JP2007192261A (en) * | 2006-01-17 | 2007-08-02 | Aisan Ind Co Ltd | Check valve |
| JP2008057545A (en) * | 2007-11-14 | 2008-03-13 | Toyota Industries Corp | Fluid pressurization/supply device, and fluid tank unit |
| CN202811143U (en) * | 2012-09-21 | 2013-03-20 | 联合汽车电子有限公司 | Electric fuel pump of integrated pressure regulating valve |
| CN203362363U (en) * | 2013-07-26 | 2013-12-25 | 浙江恒兴汽车零部件有限公司 | Anti-rotation check valve electronic injection fuel pump |
| CN104074740A (en) * | 2014-07-09 | 2014-10-01 | 瑞安市奔达汽车配件有限公司 | Magnetic coupling driven electric fuel oil pump |
| CN204627815U (en) * | 2015-04-16 | 2015-09-09 | 重庆万力联兴实业(集团)有限公司 | Electric fuel punp pump case cap assembly |
-
2015
- 2015-04-16 CN CN201510180929.1A patent/CN104806392A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6971405B2 (en) * | 2002-10-09 | 2005-12-06 | Delphi Technologies, Inc. | Check valve for fuel pump |
| JP2007192261A (en) * | 2006-01-17 | 2007-08-02 | Aisan Ind Co Ltd | Check valve |
| JP2008057545A (en) * | 2007-11-14 | 2008-03-13 | Toyota Industries Corp | Fluid pressurization/supply device, and fluid tank unit |
| CN202811143U (en) * | 2012-09-21 | 2013-03-20 | 联合汽车电子有限公司 | Electric fuel pump of integrated pressure regulating valve |
| CN203362363U (en) * | 2013-07-26 | 2013-12-25 | 浙江恒兴汽车零部件有限公司 | Anti-rotation check valve electronic injection fuel pump |
| CN104074740A (en) * | 2014-07-09 | 2014-10-01 | 瑞安市奔达汽车配件有限公司 | Magnetic coupling driven electric fuel oil pump |
| CN204627815U (en) * | 2015-04-16 | 2015-09-09 | 重庆万力联兴实业(集团)有限公司 | Electric fuel punp pump case cap assembly |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837629A (en) * | 2017-03-20 | 2017-06-13 | 瑞安市科达汽车配件有限公司 | External multifunctional cold start-up electric fuel punp |
| CN106837629B (en) * | 2017-03-20 | 2022-07-15 | 瑞安市科达汽车配件有限公司 | External multifunctional cold-start electric fuel pump |
| CN114876686A (en) * | 2022-04-25 | 2022-08-09 | 一汽奔腾轿车有限公司 | Fuel pump fine filter structure integrated with one-way valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150729 |
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| RJ01 | Rejection of invention patent application after publication |